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Lease Commitments - Schedule of Future Expected Lease Payments (Details) $ in Thousands	Dec. 31, 2021 USD ($)
Financing
2022	$ 6,307
2023	5,912
2024	4,719
2025	2,985
2026	1,857
Later years	1,336
Total minimum lease payments	23,116
Less: Imputed interest	1,228
Lease liabilities as of December 31, 2021	21,888
Operating
2022	28,365
2023	19,395
2024	8,987
2025	7,509
2026	7,367
Later years	20,823
Total minimum lease payments	92,446
Less: Imputed interest	9,235
Lease liabilities as of December 31, 2021	83,211
Public Service Company of New Mexico
Financing
2022	2,962
2023	2,841
2024	2,159
2025	1,345
2026	1,022
Later years	724
Total minimum lease payments	11,053
Less: Imputed interest	590
Lease liabilities as of December 31, 2021	10,463
Operating
2022	26,266
2023	17,735
2024	7,908
2025	6,946
2026	6,880
Later years	20,640
Total minimum lease payments	86,375
Less: Imputed interest	8,545
Lease liabilities as of December 31, 2021	77,830
Texas-New Mexico Power Company
Financing
2022	3,253
2023	3,017
2024	2,546
2025	1,638
2026	834
Later years	613
Total minimum lease payments	11,901
Less: Imputed interest	634
Lease liabilities as of December 31, 2021	11,267
Operating
2022	1,888
2023	1,480
2024	1,030
2025	525
2026	449
Later years	0
Total minimum lease payments	5,372
Less: Imputed interest	335
Lease liabilities as of December 31, 2021	$ 5,037

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